奇观

A great work, with a feature

Great works, also called wonders of the world, are special holdings that are constructed at great cost and confer lasting benefits. Great works bring new ways to spend a dynasty's amassed fortune by creating new developments that can provide bonuses for the character, its family, and the realm.

Building a great work

Great works can be built in any province by clicking the "View great work construction" button on the province menu. From there, the player has to select from a set of available great work options. Once the first level has been completed it is possible to upgrade up to level 4 with additional features suitable for said great work. Each stage grants 2 feature slots, which allow the ruler to customize the benefits of their great work, up to 8 slots at the maximum level.

Great works have a base construction cost and a monthly construction cost. Both of these costs increase with the number of great works already existing within the realm: 40% more gold per great work, and an additional 80% increase for each great work of the same type. Thus it is best to focus on upgrading one great work to stage 4 at a time, and to build a variety of great works instead of the same one multiple times.

Both stage construction and feature construction can be paused by the ruler, in case they cannot afford the monthly cost of continuing construction.

The cost of great works can be reduced by Construction technology and by having the trait.

When building your first great work, the "Build a Great Work" Ambition will add a bonus feature (if it is constructed in your demesne).

Looting and Restoration

The current owner of a Great Work that has not participated in building or restoring it may loot it for gold. Looting a great work grants 300, 500, or 800 gold, depending on how expensive the Great Work is. Looting damages it, dropping its current stage level by one and rendering it non-functional until it is restored. Looting a great work takes a period of time that varies per great work.

Looted great works may be restored to their former glory, and must be restored before the current owner may regain its benefits and begin upgrading it again. Similar to building a great work stage, restoring one has an initial cost and monthly cost. A ruler that looted a great work may not participate in its restoration.

Generic Features

These features are available for multiple Great Work types. See specific Great Work entries for their unique features and a list of available generic features.

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Great Roads	450 gold	1 gold	24 months	+10% Local Movement Speed
Watchtower Network	500 gold	1 gold	72 months	+10% Levy Size
Spikes	450 gold	1 gold	24 months	+5% Siege Defense	Can be used to execute prisoners (hidden) Enables Intimidation Attempts
Tower	450 gold	1 gold	24 months	+5% Siege Defense +0.02 Prestige
Hypocausts	300 gold	1 gold	12 months	+1% Disease Resistance +0.02 Prestige
Heating Pipes	500 gold	1 gold	12 months	+2% Disease Resistance +0.02 Prestige		Requires Hypocausts
Retinue	550 gold	1 gold	24 months	+1 Supply Limit +10% Garrison Size +5.0% Land Organization	(Hidden) Enables the Recruit an Honor Guard decision, 1000 Light Infantry and 500 Heavy Infantry for 100 gold, 1.10 maintenance, non-reinforcing, only one can be raised at a time. (Hidden) More likely to remove negative province modifiers like Smuggler's Ring
Torture Chambers	550 gold	1 gold	24 months	+10 Cruel Opinion	Can be used to execute prisoners Enables Intimidation Attempts (Hidden) Enables Private Conversations
Historical Mural	300 gold	1 gold	30 months	+3 Dynasty Opinion
Road Tolls	250 gold	1 gold	18 months	+5% Local Tax Modifier
Tavern	300 gold	1 gold	18 months	+5 Drunkard Opinion	Might allow you to remove Stressed	Not allowed or active for Zealous Muslims

Events and Decisions

Events and decisions common to multiple Great Works and features.

Intimidation

Intimidating Great Work features add a targeted character decision, Try to Intimidate, to the right click on character menu, with a 2 year cooldown. Higher diplomacy and a craven target raise the chance of success. Only usable within the same realm.

The decision gives the following options:

• Gain +20 opinion with the target for 2 years on success, lose -25 opinion for 2 years on failure
• Gain a favor with the target on success, loss -25 opinion for 2 years on failure
• Gain +5 opinion with the target for 2 years on success, lose -15 opinion for 2 years on failure (higher chance of success than the first option)

Private Conversation

Secluded Great Works features add a targeted character decision, Private Conversation, to the right click on character menu.

Burial Ceremony

Great Works considered Burial Grounds wlll trigger an event on ruler death for a burial ceremony. The options are:

• Expensive Ceremony: Lose between -100 and -400 gold, gain +150 prestige and +50 piety. Characters who liked the dead ruler (+20 opinion or higher) gain +15 opinion of you. Characters who hated the dead ruler (-50 opinion or lower) lose -15 opinion with you.
• Moderate Ceremony: Lose between -50 and -200 gold, gain +50 prestige and +100 piety. Characters who liked the dead ruler (+20 opinion or higher) gain +15 opinion of you
• Cheap Ceremony: Lose between -10 and -100 gold, lose -20 prestige, gain +10 piety
• No Ceremony: Lose -50 prestige, -50 piety. Characters who liked the dead ruler (+20 opinion or higher) lose -15 opinion of you. Characters who hated the dead ruler (-50 opinion or lower) gain +15 opinion with you.

Store a Relic

Great work features that store relics give the Store a Relic decision. Religious artifacts can be stored for an immediate gain of Piety and Prestige. You will lose the artifact. Only one artifact can be stored per Great work.

Quality	Piety	Prestige
1	100	0
2	200	0
3	300	100
4	400	300
5	500	500

Looted Artifacts

Some Great Works cause an event when looted that gives the looting character an artifact. Great Works with bells give the Bells artifact. Great works with books give a random artifact from this list:

• Magnum Opus on Stellar Astrology (Quality 1)
• Magnum Opus on Planetary Astrology (Quality 1)
• Court Etiquette - Volume 1
• Kama Sutra
• In Honor of My Beloved (Quality 1)
• The Art of Love
• The Illiad
• The Odyssey
• Speculum Regale
• Apicius
• Kitab al-Tabikh
• A History of Temples

A Town Is Born

An event that fires 50 days after a Great Work feature's completion that grants a holding slot to the Great Work's province. The trigger conditions are:

• At Peace
• Great Work is at least 50 years old
• Great Work has at least 2 features
• Event has not triggered before on the province

Be sure to pause your feature's construction so that it finishes while you are at peace if you want this event to fire.

Crumbling Masterwork

A yearly pulse event that requires a Great Work that is at least 100 years old. Two options:

• Repair the work. Lose -50 gold, gain +40 prestige.
• Sell the pieces. Gain +100 gold.

This event does not cause damage (requiring restoration or losing a stage like looting) to the wonder.

Send Alcoholic Gift

The Brewery and Vineyard features enable a targeted decision to gift alcohol to any character within diplomatic range. +10 opinion for 1 year, with a 1 year cooldown.

Inspires Learning

Great works and features that inspire learning improve the results of the Invite Holy Man to court decision, giving the priest a chance to have higher learning and positives traits like Erudite and Genius.

Great Temples

Grand Cathedral

Requirements: Owner's religion is in the Christian group.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.05 prestige +0.1 piety
II	2200 gold	5 gold	375 months	+0.1 prestige +0.1 piety
III	2400 gold	5 gold	375 months	+0.1 prestige +0.2 piety
IV	2600 gold	5 gold	325 months	+0.2 prestige +0.2 piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Gargoyles	450 gold	1 gold	24 months	+5 Cruel Opinion	Can be used to execute prisoners Enables Intimidation attempts	Christian religious group
Bells	450 gold	1 gold	24 months	+10% Siege Defense	(Hidden) More likely to remove negative province modifiers like Smuggler's Ring	Christian religious group
Stained Glass Window	450 gold	1 gold	20 months	+5 Temple Vassal Opinion		Christian religious group
Relic Tomb	450 gold	1 gold	24 months	+0.25 Monthly Piety		Christian religious group Must store a relic within before gaining effects, See Great_works#Store_a_Relic
Grand Basilica	450 gold	1 gold	24 months	+5 City Vassal Opinion		Christian religious group
Catacombs	450 gold	1 gold	24 months	+10% Siege Defense +0.05 Piety		Christian religious group
Giant Cross	450 gold	1 gold	24 months	+2 Same Religion Opinion		Christian religious group
Golden Bells	450 gold	1 gold	24 months	+5 Proud Opinion	(Hidden) More likely to remove negative province modifiers like Smuggler's Ring	Christian religious group Bells feature

Great Mosque

Requirements: Owner's religion is in the Muslim group.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.05 prestige +0.1 piety
II	2200 gold	5 gold	375 months	+0.1 prestige +0.1 piety
III	2400 gold	5 gold	375 months	+0.1 prestige +0.2 piety
IV	2600 gold	5 gold	325 months	+0.2 prestige +0.2 piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Minaret	450 gold	1 gold	24 months	+2 Same Religion Opinion	Owner converts counties to their religion faster	Muslim religious group
Sahn	450 gold	1 gold	24 months	+5% Disease Resistance		Muslim religious group Requires at least 2 previous features
Qubba	450 gold	1 gold	24 months	+5 Temple Vassal Opinion		Muslim religious group
Magnificent Hanging Lamps	450 gold	1 gold	24 months	+2 Same Religion Opinion		Muslim religious group
Soup Kitchen	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +2.5% Disease Resistance +5 Kind Opinion		Muslim religious group
School	450 gold	1 gold	24 months	-1.0% Revolt Risk +5 Scholar Opinion	Owner converts counties to their culture faster Inspires Learning	Muslim religious group
Caravanserai	450 gold	1 gold	24 months	+0.05 Monthly Piety		Muslim religious group
Custodian of the Mosque	450 gold	1 gold	24 months		Unlocks the Custodian of the Mosque minor title (+5 opinion minor title)	Muslim religious group

Great Synagogue

Requirements: Owner's religion is Jewish

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.05 prestige +0.1 piety
II	2200 gold	5 gold	375 months	+0.1 prestige +0.1 piety
III	2400 gold	5 gold	375 months	+0.1 prestige +0.2 piety
IV	2600 gold	5 gold	325 months	+0.2 prestige +0.2 piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Tallest Building	450 gold	1 gold	24 months	+0.5 Monthly Prestige +1% Morale of Armies		Jewish relgion
Outer Wall and Open Garden	450 gold	1 gold	24 months	+10% Land Organization		Jewish relgion Requires at least 2 previous features
Holy Ark	450 gold	1 gold	24 months	+5 Temple Vassal Opinion		Jewish relgion
Elaborate Decorations	450 gold	1 gold	24 months	+2 Same Vassal Opinion		Jewish relgion
Choir Rooms	450 gold	1 gold	24 months	+0.05 Monthly Prestige +0.05 Monthly Piety		Jewish relgion
School	450 gold	1 gold	24 months	-1.0% Local Revolt Risk +5 Scholar Opinion	Owner converts counties to their culture faster Inspires Learning	Jewish relgion

Great Temple (Pagan)

Requirements: Owner's religion is in the Pagan group and that religion is reformed.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.1 Monthly Prestige
II	2200 gold	5 gold	375 months	+0.2 Monthly Prestige
III	2400 gold	5 gold	375 months	+0.2 Monthly Prestige +0.1 Monthly Piety
IV	2600 gold	5 gold	325 months	+0.3 Monthly Prestige +0.1 Monthly Piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Statue of a God	450 gold	1 gold	24 months	+0.5 Monthly Piety		Pagan religious group
Temple Guards	450 gold	1 gold	24 months	-10.0% Local Revolt Risk	(Hidden) More likely to remove negative province modifiers like Smuggler's Ring	Pagan religious group
Sacrificial Altar	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zealous Opinion		Pagan religious group and Ritual Sacrifice religious feature
Sacred Grove	450 gold	1 gold	24 months	-4.0% Local Revolt Risk	(Hidden) Enables Private Conversations	Pagan religious group
Prophecy Room	450 gold	1 gold	24 months	+5 Zealous Opinion		Pagan religious group
Temple Precinct	450 gold	1 gold	24 months	+2 Same Religion Opinion		Pagan religious group
Inner Sanctuary	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Diligent Opinion		Pagan religious group
Custodian of the Temple	450 gold	1 gold	24 months		Unlocks the Custodian of the Temple minor title (+5 opinion minor title)	Pagan religious group

Events

Counts as a Burial Ground.

Great Temple (Buddhist)

Requirements: Owner's religion is Buddhist

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.5 prestige +0.1 piety
II	2200 gold	5 gold	375 months	+0.1 prestige +0.2 piety
III	2400 gold	5 gold	375 months	+0.1 prestige +0.2 piety
IV	2600 gold	5 gold	325 months	+0.1 prestige +0.3 piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Chaitya-Grihas	450 gold	1 gold	24 months	-4.0% Local Revolt Risk		Buddhist religion
Gompa	450 gold	1 gold	24 months	+10% Siege Defense	(Hidden) More likely to remove negative province modifiers like Smuggler's Ring	Buddhist religion
Bodhi Tree	450 gold	1 gold	24 months	+2 Same Religion Opinion		Buddhist religion
Cave Complex	450 gold	1 gold	24 months	+10% Siege Defense	(Hidden) More likely to remove negative province modifiers like Smuggler's Ring	Buddhist religion
Vihara	450 gold	1 gold	24 months	+5% Disease Resistance		Buddhist religion
Buddhist School	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +5 Scholar Opinion	Owner converts counties to their culture faster Inspires Learning	Buddhist religion
Relic Stupa	450 gold	1 gold	24 months	+.25 Monthly Piety		Buddhist religion Must store a relic within before gaining effects, See Great_works#Store_a_Relic
Commerative Stupa	450 gold	1 gold	24 months	+2 Eastern Opinion		Buddhist religion
Symbolic Stupa	450 gold	1 gold	24 months	+3 Buddhist Opinion		Buddhist religion
Votive Stupa	450 gold	1 gold	24 months	+10% Local Tax Modifier		Buddhist religion Requires at least 6 previous features

Great Temple (Hindu)

Requirements: Owner's religion is Hindu

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	325 months	+0.05 prestige +0.1 piety
II	2200 gold	5 gold	375 months	+0.1 prestige +0.2 piety
III	2400 gold	5 gold	375 months	+0.1 prestige +0.2 piety
IV	2600 gold	5 gold	325 months	+0.1 prestige +0.3 piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Gopuram	450 gold	1 gold	24 months	+10% Siege Defense +2 Same Religion Opinion		Hindu religion
Shikhara	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +3 Temple Vassal Opinion	Owner can convert counties to their religion faster	Hindu religion
Maha Mandapa	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +5.0% Land Organization		Hindu religion
Temple Complex	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +3 Dynasty Opinion		Hindu religion Requires at least 4 previous features
Calai	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +5 Scholar Opinion	Owner can convert counties to their culture faster Inspires Learning	Hindu religion
Hospital	450 gold	1 gold	24 months	+5% Disease Resistance +0.05 Monthly Piety		Hindu religion

Statues

Ruler Statue

Requirements: Not buildable by Humble characters. Not buildable or active for Iconoclast or Zealous Muslims.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1500 gold	4 gold	100 months	-0.5% Local Revolt Risk +0.05 prestige
II	1700 gold	4 gold	200 months	-0.5% Local Revolt Risk +0.1 prestige
III	1900 gold	4 gold	300 months	-0.5% Local Revolt Risk +0.2 prestige
IV	2100 gold	4 gold	400 months	-0.5% Local Revolt Risk +0.3 prestige -1 Short Reign Length

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Gold Plating	700 gold	1 gold	24 months	+0.3 Monthly Prestige		Not compatible with other plating features
Silver Plating	450 gold	1 gold	24 months	+0.2 Monthly Prestige		Not compatible with other plating features
Bronze Plating	350 gold	1 gold	24 months	+0.1 Monthly Prestige		Not compatible with other plating features
Additional Statues	450 gold	1 gold	24 months	+3 Dynasty Opinion
Watcher of Giants	450 gold	1 gold	24 months		Unlocks the Watcher of Giants minor title (+5 opinion minor title)
Golden Crown	450 gold	1 gold	575 months	+3 Vassal Opinion		Stage 4 Only

Statue of a Horse

Requirements: Lunatic trait, Horse culture, or Nomadic government. Not buildable or active for Iconoclast or Zealous Muslims.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1500 gold	3 gold	200 months	+0.1 prestige
II	1700 gold	3 gold	300 months	+0.1 prestige
III	1900 gold	3 gold	400 months	+0.1 prestige
IV	2100 gold	3 gold	500 months	+0.1 prestige +10 Horse Opinion

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Shares plating and additional statues features with Ruler Statue

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Grand Stable	450 gold	1 gold	24 months	+5% Mounted Troops +5% Archers
Additional Animal Statues	450 gold	1 gold	24 months	+5 Kind Opinion
Horse Graveyard	450 gold	1 gold	24 months	+5 Horse Opinion

Fortifications

Grand Fortress

Requirements: Improved Keeps 4 and Construction 4

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	300 months	+.25 Fort Level +0.1 prestige
II	2100 gold	3 gold	400 months	+.25 Fort Level +0.1 prestige
III	2200 gold	3 gold	500 months	+.25 Fort Level +0.1 prestige +5% Siege Defense
IV	2300 gold	3 gold	600 months	+.5 Fort Level +0.1 prestige +5% Siege Defense

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Armory	450 gold	1 gold	24 months	+100 Heavy Infantry	The local smiths option for the Search for a Smith decision will grant quality 2 artifacts, instead of terrible ones, and the option for the Zweihander (See Artifacts#Grand_Fortress). If the smith is hired, the armory gives a higher chance of higher quality artifacts.
Watch Tower	450 gold	1 gold	48 months	+5.0% Siege Defense +5.0% Arrest Chance
Vault	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Pit Moat	450 gold	1 gold	24 months	+5.0% Siege Defense	Can be used to Execute prisoners
Spike Moat	450 gold	1 gold	24 months	+5.0% Siege Defense	Can be used to Execute prisoners Enables Intimidation attempts	Pit Moat feature
Water Moat	450 gold	1 gold	24 months	+5.0% Siege Defense	Can be used to Execute prisoners	Pit Moat feature
Bone Moat	450 gold	1 gold	24 months	+5.0% Siege Defense	Can be used to Execute prisoners Enables Intimidation attempts	Pit Moat feature, Cruel Trait, and 50 kills
Hidden Passageways	450 gold	1 gold	36 months	+5.0% Assassination Chance	Higher chance of escaping capture after battle
Inner Garden	450 gold	1 gold	24 months	+10.0% Land Organization	(Hidden) Enables Private Conversations
Dueling Room	450 gold	1 gold	24 months	+3 Personal Combat Rating +5 Brave Opinion

Events

The Armory unique feature modifies the event chain for the Search for a Smith decision. See Armory special effects for details.

Underground City

Requirements: Desert or Mountain county adjacent to a Hill or Mountain county

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	200 months	+0.1 prestige
II	2050 gold	3 gold	300 months	+0.1 prestige
III	2100 gold	3 gold	400 months	+0.1 prestige +5% Siege Defense
IV	200 gold	3 gold	500 months	+0.1 prestige +5% Siege Defense

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Natural Caves	450 gold	1 gold	24 months	+10.0% Plot Power Defense
Travel Tunnels	450 gold	1 gold	60 months	+10.0% Local Movement Speed
Precious Metal Mines	450 gold	1 gold	36 months	+10.0% Local Tax Modifier
Dungeon	450 gold	1 gold	24 months	+10.0% Arrest Chance
Guardian of the Deep	450 gold	1 gold	12 months		Unlocks the Guardian of the Deep minor title (+5 opinion minor title)

Great Walls

Requirements: Improved Keeps 4 and Construction 4

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 gold	3 gold	300 months	+.25 Fort Level +0.1 prestige
II	1000 gold	3 gold	300 months	+.25 Fort Level +0.1 prestige
III	1000 gold	3 gold	300 months	+.25 Fort Level +0.1 prestige +5% Siege Defense
IV	1000 gold	3 gold	300 months	+.5 Fort Level +0.1 prestige +5% Siege Defense

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Sea Walls	500 gold	1 gold	60 months	+20.0% Siege Defense +5 City Vassal Opinion		Coastal
Studded Bastions	500 gold	1 gold	60 months	+200 Archers +5% Siege Defense
Strategic Enclaves	1000 gold	5 gold	120 months	+5.0% Local Tax Modifier +3 City Vassal Opinion	All walls of the province's holdings will be upgraded to their maximum level
Soaring Fortresses	500 gold	1 gold	60 months	+100 Heavy Infantry +5.0% Siege Defense	Unlocks the Castellan minor title (+15 opinion minor title)
Hidden Gates	500 gold	1 gold	24 months	+10.0% Siege Defense	Defenders have a higher chance of actively resisting sieges.
Gatehouse Forts	400 gold	1 gold	24 months	+150 Archers +5.0% Siege Defense
Staged Killing Fields	400 gold	1 gold	24 months	+100 Archers +10.0% Siege Defense
Deep Defense Architecture	500 gold	1 gold	60 months	+10.0% Siege Defense
Artificial Islands	300 gold	1 gold	120 months	+10.0% Siege Defense		Coastal
Walker of the Wall	450 gold	1 gold	12 months		Unlocks the Walker of the Wall minor title (+5 opinion minor title)

Great Harbor

Requirements: Coastal counties only

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1900 gold	3 gold	250 months	+2.5% Local Tax Modifier +25 Trade Value +0.1 prestige
II	1000 gold	3 gold	300 months	+2.5% Local Tax Modifier +25 Trade Value +0.1 prestige
III	1000 gold	3 gold	300 months	+2.5% Local Tax Modifier +25 Trade Value +0.1 prestige
IV	1000 gold	3 gold	300 months	+2.5% Local Tax Modifier +25 Trade Value +0.1 prestige -5% Build Cost Modifier

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Cothon	450 gold	1 gold	24 months	+0.50 Supply Limit +10.0% Siege Defense
Piers	450 gold	1 gold	24 months	+2.5% Local Tax Modifier +0.25 Supply Limit +30.00 Trade Value
Harbor Office	450 gold	1 gold	24 months	+10.0% Local Tax Modifier +0.25 Supply Limit
Lighthouse	450 gold	1 gold	24 months	+5.0% Local Tax Modifier +0.25 Supply Limit +30.00 Trade Value
Military Wharf	450 gold	1 gold	24 months	+50% Galleys +15% Siege Speed
Master of the Tides	450 gold	1 gold	24 months		Unlocks the Master of the Tides minor title (+5 opinion minor title)

Great Lighthouse

Requirements: Coastal counties only

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1500 gold	3 gold	300 months	+0.1 prestige
II	1000 gold	3 gold	300 months	+0.1 prestige
III	1000 gold	3 gold	300 months	+5% Local Tax Modifier +0.2 prestige
IV	1000 gold	3 gold	300 months	+10% Local Tax Modifier +50 Trade Value +0.3 prestige

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Treasure Chamber	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Giant Banners	450 gold	1 gold	24 months	+5.0% Morale of Armies
Custodian of the Lighthouse	450 gold	1 gold	24 months		Unlocks the Lighthouse Custodian minor title (+5 opinion minor title)
Royal Apartments	450 gold	1 gold	24 months	+3 Sex Appeal	(Hidden) Enables Private Conversations

Cultural

Grand Amphitheater

Requirements: Roman, Italian, or Greek Culture, or Hellenic religion, or religion has the ritual sacrifice feature. Religion must not be peaceful.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2500 Gold	3 Gold	300 Months	-1% Local Revolt Risk +0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	-1% Local Revolt Risk +0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	-1% Local Revolt Risk +0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	-1% Local Revolt Risk +0.1 Monthly Prestige +1 Same Religion Opinion

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Naval Spectacle	450 gold	1 gold	24 months	+2.5% Local Tax Modifier +0.10 Monthly Prestige
Animal Cages	450 gold	1 gold	24 months	+0.10 Monthly Prestige +5 Hunter Opinion
Hippodrome	450 gold	1 gold	24 months	+5% Mounted Troops
Training Academy	450 gold	1 gold	24 months		Enables the recruitment of Gladiators (decision grants a high martial courtier with combat traits and high personal combat skill, 5 year cool down)
Theatre Stage	450 gold	1 gold	24 months	+0.05 Monthly Prestige +5 Poet Opinion
Master of the Games	450 gold	1 gold	12 months		Unlocks the Master of the Games minor title (+5 opinion minor title)

Events

The Blood Games for the Ritual Sacrifice pagan reformation can be held at the Grand Amphitheater, giving 200 extra prestige.

Royal Palace

Requirements:

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2600 Gold	3 Gold	315 Months	+250 Retinue Size (retinue bonuses are not applied) +0.1 Monthly Prestige
II	1000 Gold	3 Gold	315 Months	+250 Retinue Size +0.1 Monthly Prestige
III	1000 Gold	3 Gold	315 Months	+250 Retinue Size +0.1 Monthly Prestige
IV	1000 Gold	3 Gold	200 Months	+20% Retinue Size +0.1 Monthly Prestige +3% Morale of Armies

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Historical Mural
• Dueling Room

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Fancy Throne Room	450 gold	1 gold	24 months	+0.05 Monthly Prestige
Trap Door	450 gold	1 gold	24 months	+10% Arrest Chance
Royal Bed Chamber	250 gold	1 gold	24 months	+5% Fertility	(Hidden) Enables Private Conversations
Skull Throne	450 gold	1 gold	10 months	+20 Cruel Opinion		Cruel trait, requires 100 kills to build
Golden Throne	1000 gold	1 gold	25 months	+1.00 Monthly Prestige
Royal Custodian	450 gold	1 gold	12 months		Unlocks the Royal Custodian minor title (+5 opinion minor title)
Brewery	300 gold	1 gold	36 months	+10 Drunkard Opinion	Enables the Send Alcohol Gift decision (Hidden) Enables Private Conversations
Dueling Room	450 gold	1 gold	24 months	+3 Personal Combat Rating +5 Brave Opinion

Magnificent Gardens

Requirements:

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1800 Gold	3 Gold	100 Months	+2.5% Disease Resistance +0.1 Monthly Prestige
II	1000 Gold	3 Gold	200 Months	+2.5% Disease Resistance +0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+2.5% Disease Resistance +0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+2.5% Disease Resistance +0.1 Monthly Prestige +0.2 Health

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Fountains	450 gold	1 gold	24 months	+0.05 Monthly Prestige +5 Poet Opinion
Fountain of Youth	550 gold	1 gold	36 months		Unlocks the Drink from the Fountain of Youth decision (de-ages the character by 2 years, 10 year cooldown)	Supernatural events on, Mystic trait to build
Hanging Gardens	450 gold	1 gold	24 months	+0.10 Monthly Prestige +5 Gardener Opinion
Secluded Groves	450 gold	1 gold	24 months	+5.0% Fertility	(Hidden) Enables Private Conversations
Hidden Burial Spot	450 gold	1 gold	24 months	+5.0% Plot Power Increase +5.0% Plot Power Defense
Poisonous Flowers	450 gold	1 gold	24 months	+5.0% Plot Power Increase
Herb Garden	450 gold	1 gold	24 months	+0.10 Health	Will periodically give you Herbs	Member of the Hermetic Society
Garden Statues	450 gold	1 gold	24 months	+0.05 Monthly Prestige +5.0% Plot Power Defense
Vineyard	500 gold	1 gold	36 months	+10 Drunkard Opinion	Enables the Send Alcohol Gift decision (Hidden) Enables Private Conversations
Pet Graveyard	450 gold	1 gold	24 months	+5 Own Children Opinion

Learning

Grand University

Requirements to Build: Tolerance 3 and Legalism 3. Government is not Nomadic. Religion is in Christian, Muslim, Jewish, Zoroastrian, or Eastern religious groups, or is Hellenic (reformed or non-reformed).

Requirements for Effects: Religion Is Reformed

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1500 Gold	3 Gold	350 Months	+0.05 Culture Technology Points +0.10 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.05 Culture Technology Points +0.10 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.05 Culture Technology Points +0.10 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.05 Culture Technology Points +0.02 Economy Technology Points +0.02 Military Technology Points +0.10 Monthly Prestige

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Great Seminars	450 gold	1 gold	24 months	+10.0% Technology Spread Rate +3 City Vassal Opinion +5 Scholar Opinion
Wing of Diplomacy	450 gold	1 gold	24 months	+0.05 Culture Technology Points +1 Diplomacy
Wing of Strategy	450 gold	1 gold	24 months	+0.05 Military Technology Points +1 Martial
Wing of Finance	450 gold	1 gold	24 months	+0.05 Economy Technology Points +1 Stewardship
Wing of Secrets	450 gold	1 gold	24 months	+0.05 Culture Technology Points +1 Intrigue
Wing of Theology	450 gold	1 gold	24 months	+5.0% Technology Spread Rate +1 Learning
Guardian of Knowledge	450 gold	1 gold	24 months		Unlocks the Guardian of Knowledge minor title (+5 opinion minor title)

Events

Inspires Learning

Great Library

Requirements to Build: Government is not Nomadic. Religion is in Christian, Muslim, Jewish, Zoroastrian, or Eastern religious groups, or is Hellenic (reformed or non-reformed).

Requirements for Effects: Religion is Reformed

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 Gold	3 Gold	320 Months	+0.05 Culture Technology Points +0.10 Monthly Prestige
II	1000 Gold	3 Gold	320 Months	+0.05 Culture Technology Points +0.20 Monthly Prestige
III	1000 Gold	3 Gold	320 Months	+5.0% Culture Technology Spread Rate +0.30 Monthly Prestige
IV	1000 Gold	3 Gold	320 Months	+5.0% Economy Technology Spread Rate +5.0% Military Technology Spread Rate +0.40 Monthly Prestige

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Historical Mural

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Poetry and Drama Collection	450 gold	1 gold	24 months	+5.0% Culture Technology Spread Rate
Architecture Collection	450 gold	1 gold	24 months	+5.0% Economy Technology Spread Rate
Math and Philosophy Collection	450 gold	1 gold	24 months	+5.0% Economy Technology Spread Rate
History Collection	450 gold	1 gold	24 months	+5.0% Military Technology Spread Rate
Natural Science Collection	450 gold	1 gold	24 months	+5.0% Military Technology Spread Rate
Scribe Room	450 gold	1 gold	24 months	+1.0% Technology Spread Rate +0.10 Monthly Prestige
Keeper of the Tomes	450 gold	1 gold	12 months	+5.0% Culture Technology Spread Rate	Unlocks the Keeper of the Tomes minor title (+5 opinion minor title)

Events

The collection features enable events that grant book artifacts. See Artifacts#Great_Library

While writing a book and owning a Great Library, a yearly event may trigger that improves the quality of the result.

Inspires Learning

Religious

Grand Mausoleum

Requirements:

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2100 Gold	3 Gold	300 Months	-0.25% Local Revolt Risk +0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	-0.25% Local Revolt Risk +0.2 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	-0.25% Local Revolt Risk +0.3 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	-0.25% Local Revolt Risk +0.4 Monthly Prestige +3 Dynasty Opinion

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Statues of the Dead	450 gold	1 gold	24 months	+3 Dynasty Opinion
Eternal Flame	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zunist Opinion +5 Reformed Zunist Opinion
Unmarked Tombs	450 gold	1 gold	24 months	+10% Assassination Chance	Enables Intimidation attempts
Quadriga Statue	450 gold	1 gold	24 months	+0.05 Monthly Prestige
Keeper of the Dead	450 gold	1 gold	24 months		Unlocks the Keeper of the Dead minor title (+5 opinion minor title)
Horse Graveyard	450 gold	1 gold	24 months	+5 Horse Opinion
Pet Graveyard	450 gold	1 gold	24 months	+5 Own Children Opinion

Events

Counts as a Burial Ground

Great Pyramid

Requirements: Egyptian culture, Lunatic, or Pyramid Building reformation.

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	3000 Gold	5 Gold	400 Months	+0.2 Monthly Prestige
II	3500 Gold	5 Gold	450 Months	+0.3 Monthly Prestige
III	4000 Gold	5 Gold	500 Months	-0.5% Local Revolt Risk +0.3 Monthly Prestige
IV	4500 Gold	5 Gold	550 Months	-0.5% Local Revolt Risk +0.4 Monthly Prestige +2 Same Religion Opinion

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Unique Features

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Extra Pyramids	450 gold	1 gold	120 months	+0.05 Monthly Prestige +3 Dynasty Opinion
Great Sphinx of Giza	450 gold	1 gold	60 months	+2 Same Religion Opinion +5 Proud Opinion
Hidden Room	450 gold	1 gold	24 months		Artifacts are less likely to be stolen (Hidden) Enables Private Conversations
Necropolis	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Lime Stone Casing	450 gold	1 gold	24 months	+0.05 Monthly Prestige +0.01 Monthly Piety
Traps	450 gold	1 gold	24 months		May kill anyone who tries to conquer the pyramid (Event LT.60401 that fires on change of ownership will kill two random courtiers of the new owner)
Overseer of the Rites	450 gold	1 gold	12 months		Unlocks the Overseer of the Rites minor title

Events

Counts as a Burial Ground

Great Stone Circle

Requirements: Pagan religious group

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1000 Gold	3 Gold	280 Months	+0.1 Monthly Prestige +0.05 Monthly Piety
II	1100 Gold	3 Gold	300 Months	+0.1 Monthly Prestige +0.1 Monthly Piety
III	1200 Gold	3 Gold	320 Months	+0.1 Monthly Prestige +0.2 Monthly Piety
IV	1300 Gold	3 Gold	340 Months	+0.2 Monthly Prestige +0.2 Monthly Piety +2 Same Religion Opinion

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Retinue
• Road Tolls
• Tavern

Aztec Pyramid

Requirements: Aztec religion

Stages

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Rune Stones	450 gold	1 gold	24 months	+3 Dynasty Opinion		Germanic Religion
Custodian of the Stone	450 gold	1 gold	575 months		Unlocks the Custodian of the Stone minor title (+5 opinion minor title)
More Stones	450 gold	1 gold	575 months	+2 Same Religion Opinion
Sacrificial Altar	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zealous Opinion		Pagan religious group and Ritual Sacrifice religious feature
Sacred Grove	450 gold	1 gold	24 months	-4.0% Local Revolt Risk	(Hidden) Enables Private Conversations	Pagan religious group

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	3000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	3000 Gold	3 Gold	300 Months	+0.2 Monthly Prestige
III	3000 Gold	3 Gold	300 Months	+0.2 Monthly Prestige +0.1 Monthly Piety
IV	3000 Gold	3 Gold	300 Months	+0.2 Monthly Prestige +0.2 Monthly Piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Tower
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern

Events

Counts as a Burial Ground

Historical

These are pre-existing historical great works.

Great Pyramid of Khufu

Requirements: Egyptian culture, Lunatic trait, or Pyramid Building reformation.

Location: Faiyum

Initial Stage (769 AD): 3

Stages

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Mythological Beast (Same as Great Sphinx of Giza, Great Pyramid)	450 gold	1 gold	60 months	+2 Same Religion Opinion +5 Proud Opinion
Hidden Room	450 gold	1 gold	24 months		Artifacts are less likely to be stolen (Hidden) Enables Private Conversations
Necropolis	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Traps	450 gold	1 gold	24 months		May kill anyone who tries to conquer the pyramid (Event LT.60401 that fires on change of ownership will kill two random courtiers of the new owner)
Sacrificial Altar	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zealous Opinion		Pagan religious group and Ritual Sacrifice religious feature

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	3000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	3000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige

Generic Features

• Roads
• Spikes
• Retinue
• Road Tolls
• Tavern

Unique Features

Same as Great Pyramid

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Extra Pyramids	450 gold	1 gold	120 months	+0.05 Monthly Prestige +3 Dynasty Opinion
Great Sphinx of Giza	450 gold	1 gold	60 months	+2 Same Religion Opinion +5 Proud Opinion
Hidden Room	450 gold	1 gold	24 months		Artifacts are less likely to be stolen (Hidden) Enables Private Conversations
Necropolis	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Lime Stone Casing	450 gold	1 gold	24 months	+0.05 Monthly Prestige +0.01 Monthly Piety
Traps	450 gold	1 gold	24 months		May kill anyone who tries to conquer the pyramid (Event LT.60401 that fires on change of ownership will kill two random courtiers of the new owner)
Overseer of the Rites	450 gold	1 gold	12 months		Unlocks the Overseer of the Rites minor title

Events

Counts as a Burial Ground

Stonehenge

Requirements: Pagan religious group

Location: Wiltshire

Initial Stage (769 AD): 3

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige

Generic Features

• Roads
• Spikes
• Retinue
• Road Tolls
• Tavern

Unique Features

Same as Great Stone Circle

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Rune Stones	450 gold	1 gold	24 months	+3 Dynasty Opinion		Germanic Religion
Custodian of the Stone	450 gold	1 gold	575 months		Unlocks the Custodian of the Stone minor title (+5 opinion minor title)
More Stones	450 gold	1 gold	575 months	+2 Same Religion Opinion
Sacrificial Altar	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zealous Opinion		Pagan religious group and Ritual Sacrifice religious feature
Sacred Grove	450 gold	1 gold	24 months	-4.0% Local Revolt Risk	(Hidden) Enables Private Conversations	Pagan religious group

Mausoleum of Halicarnassus

Requirements:

Location: Lykia

Initial Stage (769 AD): 2

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.2 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.3 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.4 Monthly Prestige

Generic Features

• Roads
• Spikes
• Tower
• Retinue
• Road Tolls
• Tavern

Unique Features

Same as Grand Mausoleum

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Statues of the Dead	450 gold	1 gold	24 months	+3 Dynasty Opinion
Eternal Flame	450 gold	1 gold	24 months	-5.0% Local Revolt Risk +5 Zunist Opinion +5 Reformed Zunist Opinion
Unmarked Tombs	450 gold	1 gold	24 months	+10% Assassination Chance	Enables Intimidation attempts
Quadriga Statue	450 gold	1 gold	24 months	+0.05 Monthly Prestige
Keeper of the Dead	450 gold	1 gold	24 months		Unlocks the Keeper of the Dead minor title (+5 opinion minor title)
Horse Graveyard	450 gold	1 gold	24 months	+5 Horse Opinion
Pet Graveyard	450 gold	1 gold	24 months	+5 Own Children Opinion

Events

Counts as a Burial Ground

Lighthouse of Alexandria

Requirements:

Location: Alexandria

Initial Stage (769 AD): 4

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2500 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.2 Monthly Prestige +5% Local Tax Modifier
IV	1000 Gold	3 Gold	300 Months	+0.3 Monthly Prestige +10% Local Tax Modifier +0.10 Trade Route Income

Generic Features

• Roads
• Watchtower Network
• Spikes
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Historical Mural

Unique Features

Same as Great Lighthouse

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Treasure Chamber	450 gold	1 gold	24 months		Artifacts are less likely to be stolen
Giant Banners	450 gold	1 gold	24 months	+5.0% Morale of Armies
Custodian of the Lighthouse	450 gold	1 gold	24 months		Unlocks the Lighthouse Custodian minor title (+5 opinion minor title)
Royal Apartments	450 gold	1 gold	24 months	+3 Sex Appeal	(Hidden) Enables Private Conversations

Konark Sun Temple

Requirements:

Location: Kataka

Initial Stage (769 AD): 4

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 Gold	5 Gold	500 Months	+0.05 Monthly Prestige +0.1 Monthly Piety
II	2000 Gold	5 Gold	500 Months	+0.05 Monthly Prestige +0.2 Monthly Piety
III	2000 Gold	5 Gold	500 Months	+0.1 Monthly Prestige +0.2 Monthly Piety
IV	2000 Gold	5 Gold	500 Months	+0.1 Monthly Prestige +0.3 Monthly Piety

Generic Features

• Roads
• Watchtower Network
• Spikes
• Towers
• Hypocausts
• Heating Pipes
• Retinue

Unique Features

Same as Hindu Great Temple

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Gopuram	450 gold	1 gold	24 months	+10% Siege Defense +2 Same Religion Opinion		Hindu religion
Shikhara	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +3 Temple Vassal Opinion	Owner can convert counties to their religion faster	Hindu religion
Maha Mandapa	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +5.0% Land Organization		Hindu religion
Temple Complex	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +3 Dynasty Opinion		Hindu religion Requires at least 4 previous features
Calai	450 gold	1 gold	24 months	-2.0% Local Revolt Risk +5 Scholar Opinion	Owner can convert counties to their culture faster Inspires Learning	Hindu religion
Hospital	450 gold	1 gold	24 months	+5% Disease Resistance +0.05 Monthly Piety		Hindu religion

Apostolic Palace

Requirements:

Location: Roma

Initial Stage (769 AD): 1

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2500 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige

Generic Features

• Roads
• Watchtower Network
• Spikes
• Towers
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Brewery
• Historical Mural
• Dueling Room

Unique Features

Same as Royal Palace

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Fancy Throne Room	450 gold	1 gold	24 months	+0.05 Monthly Prestige
Trap Door	450 gold	1 gold	24 months	+10% Arrest Chance
Royal Bed Chamber	250 gold	1 gold	24 months	+5% Fertility	(Hidden) Enables Private Conversations
Skull Throne	450 gold	1 gold	10 months	+20 Cruel Opinion		Cruel trait, requires 100 kills to build
Golden Throne	1000 gold	1 gold	25 months	+1.00 Monthly Prestige
Royal Custodian	450 gold	1 gold	12 months		Unlocks the Royal Custodian minor title (+5 opinion minor title)
Brewery	300 gold	1 gold	36 months	+10 Drunkard Opinion	Enables the Send Alcohol Gift decision (Hidden) Enables Private Conversations
Dueling Room	450 gold	1 gold	24 months	+3 Personal Combat Rating +5 Brave Opinion

House of Wisdom

Requirements: Not unreformed Pagan

Location: Baghdad

Initial Stage (769 AD): 1

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 Gold	3 Gold	300 Months	+0.05 Cultural Technology Points +0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.05 Cultural Technology Points +0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.05 Cultural Technology Points +0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.05 Cultural Technology Points +0.1 Monthly Prestige

Generic Features

• Roads
• Watchtower Network
• Spikes
• Towers
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Historical Mural

Unique Features

Same as Great Library

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Poetry and Drama Collection	450 gold	1 gold	24 months	+5.0% Culture Technology Spread Rate
Architecture Collection	450 gold	1 gold	24 months	+5.0% Economy Technology Spread Rate
Math and Philosophy Collection	450 gold	1 gold	24 months	+5.0% Economy Technology Spread Rate
History Collection	450 gold	1 gold	24 months	+5.0% Military Technology Spread Rate
Natural Science Collection	450 gold	1 gold	24 months	+5.0% Military Technology Spread Rate
Scribe Room	450 gold	1 gold	24 months	+1.0% Technology Spread Rate +0.10 Monthly Prestige
Keeper of the Tomes	450 gold	1 gold	12 months	+5.0% Culture Technology Spread Rate	Unlocks the Keeper of the Tomes minor title (+5 opinion minor title)

Events

Same as Great Library:

The collection features enable events that grant book artifacts. See Artifacts#Great_Library

While writing a book and owning a Great Library, a yearly event may trigger that improves the quality of the result.

Inspires Learning

Great works and features that inspire learning improve the results of the Invite Holy Man to court decision, giving the priest a chance to have higher learning and positives traits like Erudite and Genius.

Petra

Requirements:

Location: Maan

Initial Stage (769 AD): 3

Stages

Stage	Build Price (Initial)	Build Price (Monthly)	Build time	Effects
I	2000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
II	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
III	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige
IV	1000 Gold	3 Gold	300 Months	+0.1 Monthly Prestige

Generic Features

• Roads
• Watchtower Network
• Hypocausts
• Heating Pipes
• Retinue
• Road Tolls
• Tavern
• Torture Chamber
• Historical Mural

Unique Features

Same as Underground City

Name	Build Price (Initial)	Build Price (Monthly)	Build time	Effects	Special Effects	Conditions
Natural Caves	450 gold	1 gold	24 months	+10.0% Plot Power Defense
Travel Tunnels	450 gold	1 gold	60 months	+10.0% Local Movement Speed
Precious Metal Mines	450 gold	1 gold	36 months	+10.0% Local Tax Modifier
Dungeon	450 gold	1 gold	24 months	+10.0% Arrest Chance
Guardian of the Deep	450 gold	1 gold	12 months		Unlocks the Guardian of the Deep minor title (+5 opinion minor title)

References

地产